US PATENT SUBCLASS 418 / 115
.~.~.~ Weight balanced or adjustable seal

Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

104  DF  WITH MECHANICAL SEALING {14}
112  DF  .~ Seal on working member periphery separates inlet and outlet ports {1}
113  DF  .~.~ Seal on working member peripheral projection engages cylinder working chamber surface (e.g., apex seals) {9}
115.~.~.~ Weight balanced or adjustable seal

DEFINITION

Classification: 418/115

(under subclass 113) Apparatus in which the movable, expandable, adjustable or deformable means is either (1) interconnected with a weight so that outward movement thereto because of centrifugal force is at least partially counterbalanced by the weight or (2) is fixedly attached to the working member and is adapted to be moved to at least one other fixed position thereon.